Catalysis Letters

, Volume 27, Issue 3, pp 323–336

Preparation of Ni/Al2O3 catalysts from vapor phase by atomic layer epitaxy

  • Marina Lindblad
  • Lars Peter Lindfors
  • Tuomo Suntola
Article

DOI: 10.1007/BF00813919

Cite this article as:
Lindblad, M., Lindfors, L.P. & Suntola, T. Catal Lett (1994) 27: 323. doi:10.1007/BF00813919

Abstract

Ni/Al2O3 catalysts were prepared by saturating gas-solid reactions as an atomic layer epitaxy (ALE) process. Vaporized Ni(acac)2 was chemisorbed on a porous alumina support, and the produced surface complex was then air treated to remove the ligand residues. The nickel content could be precisely controlled by repeating this reactor cycle. On alumina preheated at 800°C, the nickel content varied from 3 to 21 wt%, when the number of reaction cycles was increased from one to ten. The performance of the Ni-catalysts was evaluated in the gas-phase hydrogenation of toluene. The preheat temperature of alumina influenced the activity of the catalyst, and a maximum in the activity was observed for catalysts prepared from alumina preheated at 875°C. Catalysts prepared by four reaction cycles, containing about 10 wt% nickel, gave the highest utilization of nickel.

Keywords

Ni/Al2O3 catalysts surface saturation chemisorption ALE hydrogenation of toluene 

Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • Marina Lindblad
    • 1
  • Lars Peter Lindfors
    • 2
  • Tuomo Suntola
    • 1
  1. 1.Microchemistry Ltd.EspooFinland
  2. 2.Neste Oy, Technology CentrePorvooFinland

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